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Unraveling quantum pathways using optical 3D Fourier-transform spectroscopy

Author

Listed:
  • Hebin Li

    (JILA, University of Colorado and National Institute of Standards and Technology)

  • Alan D. Bristow

    (JILA, University of Colorado and National Institute of Standards and Technology
    Present address: Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315, USA)

  • Mark E. Siemens

    (JILA, University of Colorado and National Institute of Standards and Technology
    Present address: Department of Physics and Astronomy, University of Denver, Denver, Colorado 80208-6900, USA)

  • Galan Moody

    (JILA, University of Colorado and National Institute of Standards and Technology
    University of Colorado)

  • Steven T. Cundiff

    (JILA, University of Colorado and National Institute of Standards and Technology
    University of Colorado)

Abstract

Predicting and controlling quantum mechanical phenomena require knowledge of the system Hamiltonian. A detailed understanding of the quantum pathways used to construct the Hamiltonian is essential for deterministic control and improved performance of coherent control schemes. In complex systems, parameters characterizing the pathways, especially those associated with inter-particle interactions and coupling to the environment, can only be identified experimentally. Quantitative insight can be obtained provided the quantum pathways are isolated and independently analysed. Here we demonstrate this possibility in an atomic vapour using optical three-dimensional Fourier-transform spectroscopy. By unfolding the system’s nonlinear response onto three frequency dimensions, three-dimensional spectra unambiguously reveal transition energies, relaxation rates and dipole moments of each pathway. The results demonstrate the unique capacity of this technique as a powerful tool for resolving the complex nature of quantum systems. This experiment is a critical step in the pursuit of complete experimental characterization of a system’s Hamiltonian.

Suggested Citation

  • Hebin Li & Alan D. Bristow & Mark E. Siemens & Galan Moody & Steven T. Cundiff, 2013. "Unraveling quantum pathways using optical 3D Fourier-transform spectroscopy," Nature Communications, Nature, vol. 4(1), pages 1-9, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2405
    DOI: 10.1038/ncomms2405
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    1. Eve-Line Bancel & Etienne Genier & Rosa Santagata & Matteo Conforti & Alexandre Kudlinski & Géraud Bouwmans & Olivier Vanvcincq & Damien Labat & Andy Cassez & Arnaud Mussot, 2023. "All-fiber frequency agile triple-frequency comb light source," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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